Analysis of Manning's and Drag Coefficients for Flexible Submerged Vegetation

Accurate determination of flow resistance is of great significance in modelling of open channels that will convey water efficiently. Although, resistance or drag induced by vegetation have been systematically studied for several decades, estimating of the resistance remain as a challenge. This is be...

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Main Authors: Wan Yusof, K., Mujahid Muhammad, M., Raza Ul Mustafa, M., Azazi Zakaria, N., Gahani, A.A.
Format: Article
Institution: Universiti Teknologi Petronas
Record Id / ISBN-0: utp-eprints.20052 /
Published: Institute of Physics Publishing 2017
Online Access: https://www.scopus.com/inward/record.uri?eid=2-s2.0-85025831133&doi=10.1088%2f1757-899X%2f216%2f1%2f012046&partnerID=40&md5=eeca41b65eaefa68262d15b8d87430c3
http://eprints.utp.edu.my/20052/
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spelling utp-eprints.200522018-04-22T14:39:08Z Analysis of Manning's and Drag Coefficients for Flexible Submerged Vegetation Wan Yusof, K. Mujahid Muhammad, M. Raza Ul Mustafa, M. Azazi Zakaria, N. Gahani, A.A. Accurate determination of flow resistance is of great significance in modelling of open channels that will convey water efficiently. Although, resistance or drag induced by vegetation have been systematically studied for several decades, estimating of the resistance remain as a challenge. This is because most of previous studies use artificial vegetation to investigate flow - vegetation interactions. To overcome this, the present study evaluates the vegetation resistance in terms of Manning's roughness coefficient and drag coefficient using a natural flexible vegetation (cow grass) under submerged condition. From the experimental result obtained, it was observed that the Manning's and drag coefficients decreased with the increasing in average velocity. Also, graphical relationship between Manning's coefficient, n and drag coefficient, CD has been developed with R2 = 0.9465, which indicate that there exist a strong correlation between n and CD, and one can use the proposed graphical model to predict the n - values corresponding to the CD - values. © Published under licence by IOP Publishing Ltd. Institute of Physics Publishing 2017 Article PeerReviewed https://www.scopus.com/inward/record.uri?eid=2-s2.0-85025831133&doi=10.1088%2f1757-899X%2f216%2f1%2f012046&partnerID=40&md5=eeca41b65eaefa68262d15b8d87430c3 Wan Yusof, K. and Mujahid Muhammad, M. and Raza Ul Mustafa, M. and Azazi Zakaria, N. and Gahani, A.A. (2017) Analysis of Manning's and Drag Coefficients for Flexible Submerged Vegetation. IOP Conference Series: Materials Science and Engineering, 216 (1). http://eprints.utp.edu.my/20052/
institution Universiti Teknologi Petronas
collection UTP Institutional Repository
description Accurate determination of flow resistance is of great significance in modelling of open channels that will convey water efficiently. Although, resistance or drag induced by vegetation have been systematically studied for several decades, estimating of the resistance remain as a challenge. This is because most of previous studies use artificial vegetation to investigate flow - vegetation interactions. To overcome this, the present study evaluates the vegetation resistance in terms of Manning's roughness coefficient and drag coefficient using a natural flexible vegetation (cow grass) under submerged condition. From the experimental result obtained, it was observed that the Manning's and drag coefficients decreased with the increasing in average velocity. Also, graphical relationship between Manning's coefficient, n and drag coefficient, CD has been developed with R2 = 0.9465, which indicate that there exist a strong correlation between n and CD, and one can use the proposed graphical model to predict the n - values corresponding to the CD - values. © Published under licence by IOP Publishing Ltd.
format Article
author Wan Yusof, K.
Mujahid Muhammad, M.
Raza Ul Mustafa, M.
Azazi Zakaria, N.
Gahani, A.A.
spellingShingle Wan Yusof, K.
Mujahid Muhammad, M.
Raza Ul Mustafa, M.
Azazi Zakaria, N.
Gahani, A.A.
Analysis of Manning's and Drag Coefficients for Flexible Submerged Vegetation
author_sort Wan Yusof, K.
title Analysis of Manning's and Drag Coefficients for Flexible Submerged Vegetation
title_short Analysis of Manning's and Drag Coefficients for Flexible Submerged Vegetation
title_full Analysis of Manning's and Drag Coefficients for Flexible Submerged Vegetation
title_fullStr Analysis of Manning's and Drag Coefficients for Flexible Submerged Vegetation
title_full_unstemmed Analysis of Manning's and Drag Coefficients for Flexible Submerged Vegetation
title_sort analysis of manning's and drag coefficients for flexible submerged vegetation
publisher Institute of Physics Publishing
publishDate 2017
url https://www.scopus.com/inward/record.uri?eid=2-s2.0-85025831133&doi=10.1088%2f1757-899X%2f216%2f1%2f012046&partnerID=40&md5=eeca41b65eaefa68262d15b8d87430c3
http://eprints.utp.edu.my/20052/
_version_ 1741196308558905344
score 11.62408

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